What is a pathogen?

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Prepare thoroughly for the Infection and Response Test. Use detailed flashcards, targeted questions, and expert explanations. This interactive quiz is perfect to help you succeed and gain confidence in your ability.

Multiple Choice

What is a pathogen?

Explanation:
A pathogen is any disease-causing organism or infectious agent. This includes bacteria, viruses, fungi, parasites, and even infectious proteins (prions) that can damage a host and lead to illness. It’s not just any microbe, since many microbes are harmless or beneficial to us. It’s not a chemical causing disease, which would be a toxin or toxicant rather than a living or biologically active agent. While viruses are well-known pathogens, the category is broader, so the best description is a disease-causing organism or agent.

A pathogen is any disease-causing organism or infectious agent. This includes bacteria, viruses, fungi, parasites, and even infectious proteins (prions) that can damage a host and lead to illness. It’s not just any microbe, since many microbes are harmless or beneficial to us. It’s not a chemical causing disease, which would be a toxin or toxicant rather than a living or biologically active agent. While viruses are well-known pathogens, the category is broader, so the best description is a disease-causing organism or agent.

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